EP1092115A1 - Cooking device with energy storage and extraction system - Google Patents

Cooking device with energy storage and extraction system

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Publication number
EP1092115A1
EP1092115A1 EP99939906A EP99939906A EP1092115A1 EP 1092115 A1 EP1092115 A1 EP 1092115A1 EP 99939906 A EP99939906 A EP 99939906A EP 99939906 A EP99939906 A EP 99939906A EP 1092115 A1 EP1092115 A1 EP 1092115A1
Authority
EP
European Patent Office
Prior art keywords
energy
cooking
appliance according
cooking appliance
energy storage
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP99939906A
Other languages
German (de)
French (fr)
Other versions
EP1092115B1 (en
Inventor
Peter Wiedemann
Peter Kohlstrung
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Rational AG
Original Assignee
Rational AG
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Filing date
Publication date
Application filed by Rational AG filed Critical Rational AG
Publication of EP1092115A1 publication Critical patent/EP1092115A1/en
Application granted granted Critical
Publication of EP1092115B1 publication Critical patent/EP1092115B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
    • F24C15/00—Details
    • F24C15/34—Elements and arrangements for heat storage or insulation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
    • F24C15/00—Details
    • F24C15/32—Arrangements of ducts for hot gases, e.g. in or around baking ovens
    • F24C15/322—Arrangements of ducts for hot gases, e.g. in or around baking ovens with forced circulation
    • F24C15/327—Arrangements of ducts for hot gases, e.g. in or around baking ovens with forced circulation with air moisturising
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D20/00—Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00
    • F28D20/02—Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00 using latent heat
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/14—Thermal energy storage

Definitions

  • the invention relates to a cooking device with a cooking space, a heater, a circulation system and a measuring and control system, connected to the heater and the circulation system.
  • DE 197 57 415 Cl discloses a cooking appliance with heat recirculation, in which a heating heat exchanger is flowed through by a heat transfer fluid to emit heat to the cooking medium of the cooking appliance and the temperature of the heat transfer fluid is increased by compression upstream of the heating heat exchanger, optionally with a preheating device connected in series .
  • the energy storage and energy extraction system comprises at least one energy store which can be charged with energy inductively, resistively and / or convectively.
  • the at least one energy store via a heater, preferably in cooking phases that require little or no energy, and / or pauses in cooking, and / or via waste heat, such as heat from exhaust air, condensate, uncondensed portion of a cooking medium and / or excess steam that can be charged with energy.
  • a first energy store comprises a first material that is suitable for heat storage and / or consumes or releases latent heat during a phase change.
  • a second energy store comprises a second material which is suitable for storing cold.
  • the first material may comprise a metal, a salt, a polymer, water, steam and / or superheated steam according to the invention.
  • the second material can comprise a metal, a salt, a polymer, water and / or iron.
  • At least the first and / or second energy storage device of the energy storage and energy extraction system is or are arranged in a space-saving manner in an insulating skin of the cooking appliance.
  • the energy stored in the energy storage and energy extraction system in the form of thermal, electrical and / or mechanical energy in the cooking device, in particular for at least partially operating the heating, the circulation system, a humidity control, a steam generator and / or a cooling unit, using the measuring and control system.
  • energy can be drawn convectively from the energy storage and energy extraction system, in particular via at least one heat transfer surface.
  • energy can be removed from the energy storage and energy extraction system by throttling and / or compression, preferably as steam present as the first material, adding water and / or evaporating water on hot walls, in particular for evaporating water and / or for heating a cooking process.
  • the energy storage and energy extraction system energy by expansion and / or relaxation preferably as the second material available medium, can be removed, in particular for cooling the cooking space, freezing food to be cooked, before and / or after cooking, and / or condensing vapors from the cooking space .
  • the invention is therefore based on the surprising finding that by installing an energy storage and energy extraction system which is connected to the measuring and control system already present in a conventional cooking device, the power consumption by controlled operation of a heater, a steam generator, a blower, one Cooling unit, a humidity control unit, etc. can be reduced by removing stored energy, while using waste heat.
  • an energy store can be controlled, for example, in pauses in cooking, such as are always incurred in the case of batch operation or are caused by the cooking process, and / or in a priori cooking phases in which a cooking process requires little or no energy the measuring and control system, according to a priority hierarchy to ensure an undisturbed course of a cooking process, or be charged by the heat exiting from the cooking space or escaping excess steam, in order to then do more in hyperprior cooking phases in which the cooking process requires a lot of energy Installed heating for heating the food can deliver energy from the energy storage.
  • Cooking processes with high energy consumption can also be accelerated, in particular at the beginning, by using a cooking device according to the invention. If the energy store, for example, is rated at 2 kWh and its energy is removed in the first ten minutes of cooking, this results in an increase in output of 12 kW, which means that the cooking process with a heating power of 9 kW is available in the first ten minutes of cooking 21 kW stand.
  • the presence of a heat store and a cold store means that an item to be cooked can also be frozen in an energy-saving manner, then cooked and, if necessary, frozen again in the (cooked) state.
  • Thermal energy can also be converted into cold, for example to condense vapors out of the cooking space.
  • Figure 1 is a sectional view through an inventive cooking device with an energy storage and energy extraction system
  • Figure 2 is a sectional view through an alternative energy storage and energy extraction system for use in a cooking device according to the invention.
  • a cooking device 1 comprises a cooking space 2, delimited by walls 3a and connected to an outlet 3b, a heater 4 for food to be cooked, a circulation system 5 for food to be cooked, consisting of a motor 5a, a circulator 5b and one Flow guide 5c, a steam generator 6, for moistening the food, comprising water 6a and a heater 6b, a control device 7, which with the heater 4, the circulation system 5, the steam generator 6, a humidity sensor 8, a temperature sensor 9 and an energy storage and Energy extraction system 10 is connected.
  • the control device 7 which in conventional cooking devices only has the task of regulating the moisture and temperature of the food and steaming cycles, has an additional control circuit according to the invention which controls the energy content of the energy storage and energy extraction system 10, the control algorithm used being designed in such a way that maintaining the cooking process is always a top priority.
  • the energy storage and energy extraction system 10 comprises a heater 10a and an energy store 10b, for example comprising a metal block with a central bushing which is connected to a water supply 10d via a valve 10c and comprises a heat transfer surface 10e. Both the heater 10a and the valve 10c are connected to the control device 7 for targeted energy charging and energy extraction.
  • the cooking appliance 1 described with reference to FIG. 1 works, for example, as follows:
  • control device 7 ensures that the heater 10a heats up the energy store 10b, which acts as a heat store.
  • the energy storage and energy extraction system 10 additionally feeds steam into the cooking space 2 and in this way enriches the cooking medium with moisture and heat on.
  • the steam is generated by supplying water via the water supply 10d and the valve 10c opened by the control device 7, which evaporates when the heat transfer surface 10e is contacted.
  • the energy storage and energy extraction system 20 shown in FIG. 2 comprises a heater 21b which can be heated via a current source 21a, the heating being controllable via a control device 17 and a switch 21c.
  • the energy store itself consists of two parallel connecting pipes 22a, 22b between which a plurality of pipes 22c run, the pipe system 22a, 22b, 22c comprising water 23 hermetically sealed in a certain amount.
  • a heat conductor 24a is provided between the heater 21b and the pipe system, namely the connecting pipe 22a, for energy absorption, and a further heat conductor 24b is provided between the pipe system, namely the connecting pipe 22b, and a heat transfer surface 25c for heat dissipation.
  • the control device 17 regulates the energy or heat content of the energy store, namely heating the water 23 in the pipe system 22a, 22b, 22c by switching the switch 21c and the energy or heat output, namely steam generation, via the valve 25b.
  • This regulation takes place taking into account the cooking process, the maintenance of which always has priority, and the temperature in the pipe system 22a, 22b, 22c and the temperature of the steam generated, measured via the temperature sensors 26a and 26b.
  • the pipe system 22a, 22b, 22c can be accommodated in an extremely space-saving manner in an insulating skin (not shown) of a cooking appliance, the energy extraction being made possible by a welded parallel pipe.

Abstract

The invention relates to a cooking device (1) with a cooking chamber (2), a heating device (4), a circulating system (5), an energy storage and extraction system (10) and a measuring and regulating system (7, 8, 9, 17, 26a, 26b) connected to the heating device (4), the circulating system (5)and the energy storage and extraction system (10).

Description

Gargerät mit Energiespeicher- und Energieentnahmesystem Cooking appliance with energy storage and energy extraction system
Beschreibungdescription
Die Erfindung betrifft ein Gargerät mit einen Garraum, einer Heizung, einem Umwälzsystem und einem Meß- und Regelsystem, verbunden mit der Heizung und dem Umwälzsystem.The invention relates to a cooking device with a cooking space, a heater, a circulation system and a measuring and control system, connected to the heater and the circulation system.
Herkömmliche Gargeräte sind unökonomisch, da ihre Komponenten mit extern zugeführter Energie betrieben werden.Conventional cooking devices are uneconomical because their components are operated with externally supplied energy.
Beispielsweise die DE 197 57 415 Cl offenbart ein Gargerät mit Wärmerückfuhrung, bei dem ein Heizwärmeübertrager von einem Wärmeträgerfluid zur Abgabe von Wärme an das Garmedium des Gargeräts durchströmt wird und die Temperatur des Wärmeträgerfluids durch Verdichten stromaufwärts des Heizwärmeübertragers, gegebenenfalls unter Vorschaltung einer Vorwärmeeinrichtung, erhöht wird.For example, DE 197 57 415 Cl discloses a cooking appliance with heat recirculation, in which a heating heat exchanger is flowed through by a heat transfer fluid to emit heat to the cooking medium of the cooking appliance and the temperature of the heat transfer fluid is increased by compression upstream of the heating heat exchanger, optionally with a preheating device connected in series .
Es ist die Aufgabe der gegenwärtigen Erfindung, das gattungsgemäße Gargerät derart weiter- zuentwickeln, daß es eine optimierte Energieregelung aufweist.It is the object of the present invention to further develop the generic cooking appliance in such a way that it has an optimized energy control.
Diese Aufgabe wird erfindungsgemäß durch ein Energiespeicher- und Energieentnahmesystem, verbunden mit dem Meß- und Regelsystem, gelöst.This object is achieved according to the invention by an energy storage and energy extraction system, connected to the measuring and control system.
Dabei kann erfindungsgemäß vorgesehen sein, daß das Energiespeicher- und Energieentnahmesystem zumindest einen Energiespeicher umfaßt, der induktiv, resistiv und/oder konvektiv mit Energie aufladbar ist.It can be provided according to the invention that the energy storage and energy extraction system comprises at least one energy store which can be charged with energy inductively, resistively and / or convectively.
Weiterhin kann vorgesehen sein, daß der zumindest eine Energiespeicher über eine Heizung, vorzugsweise in Garphasen, die keine oder wenig Energie benötigen, und/oder Garpausen, und/oder über Abwärme, wie Wärme von Abluft, Kondensat, nicht kondensiertem Anteil eines Garmediums und/oder überschüssigem Dampf, mit Energie aufladbar ist. Die Erfindung sieht dabei vor, daß ein erster Energiespeicher ein erstes Material umfaßt, das zur Wärmespeicherung geeignet ist und/oder bei einer Phasenumwandlung latente Wärme verbraucht oder freisetzt.Furthermore, it can be provided that the at least one energy store via a heater, preferably in cooking phases that require little or no energy, and / or pauses in cooking, and / or via waste heat, such as heat from exhaust air, condensate, uncondensed portion of a cooking medium and / or excess steam that can be charged with energy. The invention provides that a first energy store comprises a first material that is suitable for heat storage and / or consumes or releases latent heat during a phase change.
Erfindungsgemäß auch vorgesehen, daß ein zweiter Energiespeicher ein zweites Material umfaßt, das zur Kältespeicherung geeignet ist.According to the invention it is also provided that a second energy store comprises a second material which is suitable for storing cold.
Das erste Material kann ein Metall, ein Salz, ein Polymer, Wasser, Dampfund/oder überhitzten Dampf gemäß der Erfindung umfassen.The first material may comprise a metal, a salt, a polymer, water, steam and / or superheated steam according to the invention.
Das zweite Material kann ein Metall, ein Salz, ein Polymer, Wasser und/oder Eisen umfassen.The second material can comprise a metal, a salt, a polymer, water and / or iron.
Erfindungsgemäß bevorzugt ist, daß zumindest der erste und/oder zweite Energiespeicher des Energiespeicher- und Energieentnahmesystems platzsparend in einer isolierenden Haut des Gargeräts angeordnet ist bzw. sind.It is preferred according to the invention that at least the first and / or second energy storage device of the energy storage and energy extraction system is or are arranged in a space-saving manner in an insulating skin of the cooking appliance.
Weiterhin kann vorgesehen sein, daß die im Energiespeicher- und Energieentnahmesystem gespeicherte Energie in Form von thermischer, elektrischer und/oder mechanischer Energie im Gargerät, insbesondere zum zumindest teilweisen Betreiben der Heizung, des Umwälzsystems, einer Feuchtregelung, eines Dampferzeugers und/oder einer Abkühleinheit, unter Einsatz des Meß- und Regelsystems, nutzbar ist.Furthermore, it can be provided that the energy stored in the energy storage and energy extraction system in the form of thermal, electrical and / or mechanical energy in the cooking device, in particular for at least partially operating the heating, the circulation system, a humidity control, a steam generator and / or a cooling unit, using the measuring and control system.
Ferner kann vorgesehen sein, daß dem Energiespeicher- und Energieentnahmesystem Energie konvektiv entnehmbar ist, insbesondere über zumindest eine Wärmeübertragungsfläche.Furthermore, it can be provided that energy can be drawn convectively from the energy storage and energy extraction system, in particular via at least one heat transfer surface.
Ferner wird erfindungsgemäß vorgeschlagen, daß dem Energiespeicher- und Energieentnahmesystem Energie durch Drosselung und/oder Verdichtung, vorzugsweise als das erste Material vorhandenen Dampfes, Zugabe von Wasser und/oder Verdampfen von Wasser an heißen Wänden entnehmbar ist, insbesondere zum Verdampfen von Wasser und/oder zur Beheizung eines Garprozesses.Furthermore, it is proposed according to the invention that energy can be removed from the energy storage and energy extraction system by throttling and / or compression, preferably as steam present as the first material, adding water and / or evaporating water on hot walls, in particular for evaporating water and / or for heating a cooking process.
Auch wird erfindungsgemäß vorgeschlagen, daß dem Energiespeicher- und Energieentnahme- system Energie durch Expansion und/oder Entspannung, vorzugsweise als das zweite Material vorhandenen Mediums, entnehmbar ist, insbesondere zum Kühlen des Garraums, Gefrieren von Gargut, vor und/oder nach dem Garen, und/oder Auskondensieren von Wrasen aus dem Garraum, zugeführt wird.It is also proposed according to the invention that the energy storage and energy extraction system energy by expansion and / or relaxation, preferably as the second material available medium, can be removed, in particular for cooling the cooking space, freezing food to be cooked, before and / or after cooking, and / or condensing vapors from the cooking space .
Schließlich wird eine bevorzugte erfindungsgemäße Weiterentwicklung vorgeschlagen, bei der das Meß- und Regelsystem sicherstellt, daß die Unterhaltung eines Garprozesses stets höchste Priorität genießt.Finally, a preferred further development according to the invention is proposed, in which the measuring and control system ensures that the maintenance of a cooking process always has the highest priority.
Der Erfindung liegt somit die überraschende Erkenntnis zugrunde, daß durch den Einbau eines Energiespeicher- und Energieentnahmesystems, das mit dem in einem herkömmlichen Gargerät bereits vorhandenen Meß- und Regelsystem verbunden ist, der Stromverbrauch durch geregeltes Betreiben einer Heizung, eines Dampfgenerators, eines Gebläses, einer Kühleinheit, einer Feuchtigkeitsregelungseinheit etc. durch Entnahme gespeicherter Energie reduziert werden kann, unter gleichzeitiger Nutzung von Abwärme.The invention is therefore based on the surprising finding that by installing an energy storage and energy extraction system which is connected to the measuring and control system already present in a conventional cooking device, the power consumption by controlled operation of a heater, a steam generator, a blower, one Cooling unit, a humidity control unit, etc. can be reduced by removing stored energy, while using waste heat.
Dabei kann ein Energiespeicher beispielsweise in Garpausen, wie sie im Falle eines Chargenbetriebs stets anfallen oder durch den Garablauf bedingt sind, und/oder in aprioren Garphasen, in denen ein Garprozeß wenig oder keine Energie benötigt, mittels einer, gegebenenfalls zusätzlichen, Heizung, gesteuert über das Meß- und Regelsystem, nach einer Prioritätshierarchie zur Sicherstellung eines ungestörten Ablaufs eines Garprozesses, oder durch die Wärme aus dem Garraum austretender Abluft beziehungsweise austretenden überschüssigen Dampfes aufgeladen werden, um dann in hyperprioren Garphasen, in denen der Garprozeß viel Energie benötigt, mehr als die zum Heizen des Garguts installierte Heizung liefern kann, Energie aus dem Energiespeicher entnehmen zu können.In this case, an energy store can be controlled, for example, in pauses in cooking, such as are always incurred in the case of batch operation or are caused by the cooking process, and / or in a priori cooking phases in which a cooking process requires little or no energy the measuring and control system, according to a priority hierarchy to ensure an undisturbed course of a cooking process, or be charged by the heat exiting from the cooking space or escaping excess steam, in order to then do more in hyperprior cooking phases in which the cooking process requires a lot of energy Installed heating for heating the food can deliver energy from the energy storage.
Garprozesse mit hohem Energieverbrauch können durch Verwendung eines erfindungsgemäßen Gargeräts zudem, insbesondere zu Anfang, beschleunigt werden. Ist der Energiespeicher, beispielsweise, mit 2 kWh bemessen und wird seine Energie in den ersten zehn Garminuten entnommen, ergibt dies einen Leistungszuwachs von 12 kW, das heißt, daß dem Garprozeß bei einer Heizleistung von 9 kW in den ersten zehn Garminuten 21 kW zur Verfügung stehen. Durch das Vorhandensein eines Wärmespeichers sowie eines Kältespeichers kann zudem auf energiesparende Weise ein garendes Gut gefroren, anschließend gegart und gegebenenfalls im (an)gegarten Zustand wieder eingefroren werden.Cooking processes with high energy consumption can also be accelerated, in particular at the beginning, by using a cooking device according to the invention. If the energy store, for example, is rated at 2 kWh and its energy is removed in the first ten minutes of cooking, this results in an increase in output of 12 kW, which means that the cooking process with a heating power of 9 kW is available in the first ten minutes of cooking 21 kW stand. The presence of a heat store and a cold store means that an item to be cooked can also be frozen in an energy-saving manner, then cooked and, if necessary, frozen again in the (cooked) state.
Auch kann Wärmeenergie in Kälte umgewandelt werden, um beispielsweise Wrasen aus dem Garraum auszukondensieren.Thermal energy can also be converted into cold, for example to condense vapors out of the cooking space.
Weitere Merkmale und Vorteile der Erfindung ergeben sich aus der nachfolgenden Beschreibung, in der zwei Ausführungsbeispiele der Erfindung anhand von schematischen Zeichnungen im einzelnen erläutert sind. Dabei zeigt:Further features and advantages of the invention result from the following description, in which two exemplary embodiments of the invention are explained in detail on the basis of schematic drawings. It shows:
Figur 1 eine Schnittansicht durch ein erfindungsgemäßes Gargerät mit einem Energiespeicher- und Energieentnahmesystem; undFigure 1 is a sectional view through an inventive cooking device with an energy storage and energy extraction system; and
Figur 2 eine Schnittansicht durch ein alternatives Energiespeicher- und Energieentnahmesystem zur Verwendung in einem erfindungsgemäßen Gargerät.Figure 2 is a sectional view through an alternative energy storage and energy extraction system for use in a cooking device according to the invention.
Wie Figur 1 zu entnehmen ist, umfaßt ein erfindungsgemäßes Gargerät 1 einen Garraum 2, begrenzt durch Wände 3a und verbunden mit einem Ablauf 3b, eine Heizung 4 für Gargut, ein Umwälzsystem 5 für Gargut, bestehend aus einem Motor 5a, einem Umwälzer 5b und einem Strömungsführer 5c, einen Dampferzeuger 6, zur Befeuchtung des Garguts, umfassend Wasser 6a und eine Heizung 6b, eine Regeleinrichtung 7, die mit der Heizung 4, dem Umwälzsystem 5, dem Dampferzeuger 6, einem Feuchtefühler 8, einem Temperaturfühler 9 sowie einem Energiespeicher- und Energieentnahmesystem 10 verbunden ist. Die Regeleinrichtung 7, die in konventionellen Gargeräten lediglich die Aufgabe hat, Feuchtigkeit sowie Temperatur des Garguts und Beschwadungszyklen zu regeln, verfugt erfindungsgemäß über einen zusätzlichen Regelkreis, der den Energiegehalt des Energiespeicher- und Energieentnahmesystems 10 regelt, wobei der verwendete Regelalgorithmus so gestaltet ist, daß die Unterhaltung des Garprozesses stets höchste Priorität genießt.As can be seen in FIG. 1, a cooking device 1 according to the invention comprises a cooking space 2, delimited by walls 3a and connected to an outlet 3b, a heater 4 for food to be cooked, a circulation system 5 for food to be cooked, consisting of a motor 5a, a circulator 5b and one Flow guide 5c, a steam generator 6, for moistening the food, comprising water 6a and a heater 6b, a control device 7, which with the heater 4, the circulation system 5, the steam generator 6, a humidity sensor 8, a temperature sensor 9 and an energy storage and Energy extraction system 10 is connected. The control device 7, which in conventional cooking devices only has the task of regulating the moisture and temperature of the food and steaming cycles, has an additional control circuit according to the invention which controls the energy content of the energy storage and energy extraction system 10, the control algorithm used being designed in such a way that maintaining the cooking process is always a top priority.
Das Energiespeicher- und Energieentnahmesystem 10 umfaßt dabei eine Heizung 10a und einen Energiespeicher 10b, beispielsweise umfassend einen Metallblock mit einer zentralen Durchfuhrung, die über ein Ventil 10c mit einer Wasserzufuhr lOd verbunden ist und eine Wärmeübertragungsfläche lOe umfaßt. Dabei ist sowohl die Heizung 10a als auch das Ventil 10c mit der Regeleinrichtung 7 zur gezieltes Energieladung und Energieentnahme verbunden.The energy storage and energy extraction system 10 comprises a heater 10a and an energy store 10b, for example comprising a metal block with a central bushing which is connected to a water supply 10d via a valve 10c and comprises a heat transfer surface 10e. Both the heater 10a and the valve 10c are connected to the control device 7 for targeted energy charging and energy extraction.
Das mit Bezug auf Figur 1 beschriebene Gargerät 1 arbeitet beispielsweise wie folgt:The cooking appliance 1 described with reference to FIG. 1 works, for example, as follows:
In aprioren Garphasen, in denen ein Garprozeß nur wenig oder keine Energie benötigt, in Be- und Entladephasen des Gargeräts 1 und in ablaufbedingten Garpausen sorgt die Regeleinrichtung 7 dafür, daß die Heizung 10a den Energiespeicher 10b, der als Wärmespeicher fungiert, aufheizt.In a priori cooking phases, in which a cooking process requires little or no energy, in loading and unloading phases of the cooking device 1 and in process-related cooking breaks, the control device 7 ensures that the heater 10a heats up the energy store 10b, which acts as a heat store.
In hyperperioren Garphasen, in den der Garprozeß extrem viel Energie benötigt, mehr als die im Garraum 2 installierte Heizung 4 zur Verfügung stellen kann, speist das Energiespeicherund Energieentnahmesystem 10 Dampf zusätzlich in den Garraum 2 ein und reichert auf diese Weise das Garmedium mit Feuchte und Wärme an. Der Dampf wird dabei dadurch erzeugt, daß über die Wasserzufuhr lOd und das von der Regeleinrichtung 7 geöffnete Ventil 10c Wasser zugeführt wird, das bei Kontaktierung der Wärmeübertragungsfläche lOe verdampft.In hyperperior cooking phases, in which the cooking process requires an extremely large amount of energy, more than the heating 4 installed in the cooking space 2 can provide, the energy storage and energy extraction system 10 additionally feeds steam into the cooking space 2 and in this way enriches the cooking medium with moisture and heat on. The steam is generated by supplying water via the water supply 10d and the valve 10c opened by the control device 7, which evaporates when the heat transfer surface 10e is contacted.
Das in Figur 2 dargestellte Energiespeicher- und Energieentnahmesystem 20 umfaßt eine über eine Stromquelle 21a heizbare Heizung 21b, wobei das Beheizen über eine Regeleinrichtung 17 und einen Schalter 21c regelbar ist. Der Energiespeicher an sich besteht aus zwei parallelen Verbindungsrohren 22a, 22b zwischen denen eine Vielzahl von Rohren 22c verlaufen, wobei das Rohrsystem 22a, 22b, 22c Wasser 23 hermetisch abgeschlossen in einer bestimmten Menge umfaßt. Zur Energieaufnahme ist zwischen der Heizung 21b und dem Rohrsystem, nämlich dem Verbindungsrohr 22a, ein Wärmeleiter 24a vorgesehen, und zur Wärmeabgabe ist ein weiterer Wärmeleiter 24b zwischen dem Rohrsystem, nämlich dem Verbindungsrohr 22b, und einer Wärmeübertragungsfläche 25c vorgesehen. Im Falle der Energieentnahme fließt Wasser über die Wärmeübertragungsfläche 25c, das über eine Wasserzufuhr 25a und ein Ventil 25b zufuhrbar ist. Außerdem sind Temperaturfühler vorgesehen, nämlich ein Temperaturfühler 26a für den Energiespeicher und ein Temperaturfühler 26b für den Entnahmedampf. Das mit Bezug auf Figur 2 beschriebene Energiespeicher- und Energieentnahmesystem arbeitet wie folgt:The energy storage and energy extraction system 20 shown in FIG. 2 comprises a heater 21b which can be heated via a current source 21a, the heating being controllable via a control device 17 and a switch 21c. The energy store itself consists of two parallel connecting pipes 22a, 22b between which a plurality of pipes 22c run, the pipe system 22a, 22b, 22c comprising water 23 hermetically sealed in a certain amount. A heat conductor 24a is provided between the heater 21b and the pipe system, namely the connecting pipe 22a, for energy absorption, and a further heat conductor 24b is provided between the pipe system, namely the connecting pipe 22b, and a heat transfer surface 25c for heat dissipation. In the case of energy withdrawal, water flows via the heat transfer surface 25c, which can be supplied via a water supply 25a and a valve 25b. In addition, temperature sensors are provided, namely a temperature sensor 26a for the energy store and a temperature sensor 26b for the extraction steam. The energy storage and energy extraction system described with reference to FIG. 2 operates as follows:
Die Regeleinrichtung 17 regelt den Energie- beziehungsweise Wärmegehalt des Energiespeichers, nämlich ein Aufheizen des Wassers 23 im Rohrsystem 22a, 22b, 22c, durch Schalten des Schalters 21c und die Energie- beziehungsweise Wärmeabgabe, nämlich eine Dampferzeugung, über das Ventil 25b. Diese Regelung geschieht unter Berücksichtigung des Garprozesses, dessen Unterhaltung stets Priorität hat, und der Temperatur in dem Rohrsystem 22a, 22b, 22c sowie der Temperatur des erzeugten Dampfes, gemessen über die Temperaturfühler 26a und 26b.The control device 17 regulates the energy or heat content of the energy store, namely heating the water 23 in the pipe system 22a, 22b, 22c by switching the switch 21c and the energy or heat output, namely steam generation, via the valve 25b. This regulation takes place taking into account the cooking process, the maintenance of which always has priority, and the temperature in the pipe system 22a, 22b, 22c and the temperature of the steam generated, measured via the temperature sensors 26a and 26b.
Das Rohrsystem 22a, 22b, 22c kann äußerst platzsparend in einer nicht gezeigten, isolierenden Haut eines Gargeräts untergebracht werden, wobei die Energieentnahme durch ein verschweißtes Parallelrohr ermöglicht wird.The pipe system 22a, 22b, 22c can be accommodated in an extremely space-saving manner in an insulating skin (not shown) of a cooking appliance, the energy extraction being made possible by a welded parallel pipe.
Die in der vorstehenden Beschreibung, in den Ansprüchen sowie in den Zeichnungen offenbarten Merkmale der Erfindung können sowohl einzeln als auch in beliebiger Kombination für die Verwirklichung der Erfindung in ihren verschiedenen Ausführungformen wesentlich sein. The features of the invention disclosed in the above description, in the claims and in the drawings can be essential both individually and in any combination for realizing the invention in its various embodiments.

Claims

Patentansprüche claims
1. Gargerät (1) mit einem Garraum (2), einer Heizung (4), einem Umwälzsystem (5) und einem Meß- und Regelsystem (7, 8, 9, 17, 26a, 26b), verbunden mit der Heizung (4) und dem Umwälzsystem (5), g ekennze i chnet durch ein Energiespeicher- und Energieentnahmesystem (10, 20), verbunden mit dem Meß- und Regelsystem (7, 8, 9, 17, 26a, 26b).1. Cooking device (1) with a cooking space (2), a heater (4), a circulation system (5) and a measuring and control system (7, 8, 9, 17, 26a, 26b), connected to the heater (4th ) and the circulation system (5), g ekennze i chnet by an energy storage and energy extraction system (10, 20), connected to the measuring and control system (7, 8, 9, 17, 26a, 26b).
2. Gargerät nach Anspruch 1 , dadurch g eke nnz e i chnet , daß das Energiespeicher- und Energieentnahmesystem (10, 20) zumindest einen Energiespeicher (10a, 22a, 22b, 22c, 23) umfaßt, der induktiv, resistiv und/oder konvektiv mit Energie auflad- bar ist.2. Cooking appliance according to claim 1, characterized in that the energy storage and energy extraction system (10, 20) comprises at least one energy store (10a, 22a, 22b, 22c, 23) which is inductive, resistive and / or convective Energy can be charged.
3. Gargerät nach Anspruch 2, dadurch g eke nnz e i chnet , daß der zumindest eine Energiespeicher (10a, 22a, 22b, 22c, 23) über eine Heizung (10a, 21b), vorzugsweise in Garphasen, die keine oder wenig Energie benötigen, und/oder Garpausen, und/oder über Abwärme, wie Wärme von Abluft, Kondensat, nicht kondensierten Anteil eines Garmediums und/oder überschüssigen Dampf, mit Energie aufladbar ist.3. Cooking appliance according to claim 2, characterized g eke nnz ei chnet that the at least one energy store (10a, 22a, 22b, 22c, 23) via a heater (10a, 21b), preferably in cooking phases that require little or no energy, and / or cooking breaks, and / or via waste heat, such as heat from exhaust air, condensate, uncondensed portion of a cooking medium and / or excess steam, can be charged with energy.
4. Gargerät nach Anspruch 2 oder 3 , dadurch g e kennz e i chnet , daß ein erster Energiespeicher (10a, 22a, 22b, 22c, 23) ein erstes Material (23) umfaßt, das zur Wärmespeicherung geeignet ist und/oder bei einer Phasenumwandlung latente Wärme verbraucht oder freisetzt.4. Cooking device according to claim 2 or 3, characterized ge ez chnet that a first energy store (10a, 22a, 22b, 22c, 23) comprises a first material (23) which is suitable for heat storage and / or latent in a phase change Heat consumed or released.
5. Gargerät nach einem der Ansprüche 2 bis 4, dadurch g ekennze i chnet , daß ein zweiter Energiespeicher ein zweites Material umfaßt, das zur Kältespeicherung geeignet ist.5. Cooking appliance according to one of claims 2 to 4, characterized g ekennze i chnet that a second energy storage comprises a second material which is suitable for cold storage.
6. Gargerät nach Anspruch 4 oder 5, dadurch g ekennze i chnet , daß das erste Material ein Metall, ein Salz, ein Polymer, Wasser (23), Dampfund/oder überhitzten Dampf umfaßt. 6. Cooking appliance according to claim 4 or 5, characterized in that the first material comprises a metal, a salt, a polymer, water (23), steam and / or superheated steam.
7. Gargerät nach Anspruch 5 oder 6, dadurch g ekennz e i chnet , daß das zweite Material ein Metall, ein Salz, ein Polymer, Wasser und/oder Eisen umfaßt.7. Cooking appliance according to claim 5 or 6, characterized g ekennz e i chnet that the second material comprises a metal, a salt, a polymer, water and / or iron.
8. Gargerät nach einem der Ansprüche 4 bis 7, dadurch g ekennze i chnet , daß zumindest der erste und/oder zweite Energiespeicher (10a, 22a, 22b, 22c, 23) des Energiespeicher- und Energieentnahmesystems (10, 20) platzsparend in einer isolierenden Haut des Gargeräts (1) angeordnet ist bzw. sind.8. Cooking appliance according to one of claims 4 to 7, characterized in that at least the first and / or second energy store (10a, 22a, 22b, 22c, 23) of the energy storage and energy extraction system (10, 20) saves space in one insulating skin of the cooking device (1) is or are arranged.
9. Gargerät nach einem der vorangehenden Ansprüche, dadurch g ekennze i chnet , daß die im Energiespeicher- und Energieentnahmesystem (10, 20) gespeicherte Energie in Form von thermischer, elektrischer und/oder mechanischer Energie im Gargerät, insbesondere zum zumindest teilweisen Betreiben der Heizung (4), des Umwälzsystems (5), einer Feuchtregelung, eines Dampferzeugers (6) und/oder einer Abkühleinheit, unter Einsatz des Meß- und Regelsystems (7, 8, 9, 17, 26a, 26b), nutzbar ist.9. Cooking appliance according to one of the preceding claims, characterized in that the energy stored in the energy storage and energy extraction system (10, 20) in the form of thermal, electrical and / or mechanical energy in the cooking appliance, in particular for at least partially operating the heater (4), the circulation system (5), a humidity control, a steam generator (6) and / or a cooling unit, using the measuring and control system (7, 8, 9, 17, 26a, 26b).
10. Gargerät nach einem der vorangehenden Ansprüche, dadurch g ekennze i c hnet , daß dem Energiespeicher- und Energieentnahmesystem (10, 20) Energie konvektiv entnehmbar ist, insbesondere über zumindest eine Wärmeübertragungsfläche (lOe, 25c).10. Cooking appliance according to one of the preceding claims, characterized g ekennze i c hnet that the energy storage and energy extraction system (10, 20) energy can be removed convectively, in particular via at least one heat transfer surface (lOe, 25c).
11. Gargerät nach einem der vorangehenden Ansprüche, dadurch g e ke nnze i chnet, daß dem Energiespeicher- und Energieentnahmesystem (10, 20) Energie durch Drosselung und/oder Verdichtung vorzugsweise als das erste Material vorhandenen Dampfes, Zugabe von Wasser und/oder Verdampfen von Wasser an heißen Wänden entnehmbar ist, insbesondere zum Verdampfen von Wasser und/oder zur Beheizung eines Garprozesses.11. Cooking appliance according to one of the preceding claims, characterized ge ke nnze i chnet that the energy storage and energy extraction system (10, 20) energy by throttling and / or compression preferably as the first material steam present, adding water and / or evaporating Water can be removed from hot walls, in particular for evaporating water and / or for heating a cooking process.
12. Gargerät nach einem der vorangehenden Ansprüche, dadurch gekennzei chnet , daß dem Energiespeicher- und Energieentnahmesystem (10, 20) Energie durch Expansion und/oder Entspannung, vorzugsweise als das zweite Material vorhandenen Mediums entnehmbar ist, insbesondere zum Kühlen des Garraums, Gefrieren von Gargut, vor und/oder nach dem Garen, und/oder Auskondensieren von Wrasen aus dem Garraum. 12. Cooking appliance according to one of the preceding claims, characterized gekennzei that the energy storage and energy extraction system (10, 20) energy by expansion and / or relaxation, preferably as the second material present medium can be removed, in particular for cooling the cooking space, freezing Food to be cooked, before and / or after cooking, and / or condensation of vapors from the cooking space.
13. Gargerät nach einem der vorangehenden Ansprüche, dadurch gekennzei chnet, daß das Meß- und Regelsystem (7, 8, 9, 17, 26a, 26b) sicherstellt, daß die Unterhaltung eines Garprozesses stets höchste Priorität genießt. 13. Cooking appliance according to one of the preceding claims, characterized in that the measuring and control system (7, 8, 9, 17, 26a, 26b) ensures that the maintenance of a cooking process always has the highest priority.
EP99939906A 1998-05-29 1999-05-31 Cooking device with energy storage and extraction system Expired - Lifetime EP1092115B1 (en)

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DE19824172A DE19824172A1 (en) 1998-05-29 1998-05-29 Cooking appliance with energy storage and energy extraction system
DE19824172 1998-05-29
PCT/DE1999/001668 WO1999063277A1 (en) 1998-05-29 1999-05-31 Cooking device with energy storage and extraction system

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JP3796406B2 (en) 2006-07-12
DE59900554D1 (en) 2002-01-24
US6267045B1 (en) 2001-07-31
WO1999063277A1 (en) 1999-12-09
JP2002517704A (en) 2002-06-18
DE19824172A1 (en) 1999-12-09

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